C.E. Niehoff & Co. N3012-N3210/N3107-N3121/N3237-N3211 Reg Test Procedures - Manual (Page 3)

Page 3
TG66B
A
B
C
D
A
B
C
D
F-
AC
GND
B+
+
-
30 VDC
ADJUSTABLE
POWER SUPPLY
+28VDC
IGN
N3107 REGULATOR
LAMP
30V
1W MIN.
*AMPHENOL MS3106E16-9S OR EQUIVALENT
1. SET UP AS DEMONSTRATED IN SCHEMATIC DIAGRAM.
2. MAKE SURE IGN SWITCH IS OFF.
3. TURN ON ADJUSTABLE DC POWER SUPPLY.
4. SET POWER SUPPLY TO 24.0 VDC.
LAMP SHOULD BE OFF. IF LAMP IS ON, REGULATOR IS DEFECTIVE.
5. TURN ON IGN SWITCH.
LAMP SHOULD NOW BE ON. IF LAMP IS NOW OFF, REGULATOR IS DEFECTIVE.
6. RAISE VOLTAGE ON ADJUSTABLE POWER SUPPLY .
LAMP SHOULD TURN OFF WHEN POWER SUPPLY VOLTAGE IS RAISED HIGHER THAN
REGULATOR SET POINT (27.0-29.0 VDC). IF NOT, REGULATOR IS DEFECTIVE.
IGN
SWITCH
N3107 REGULATOR TEST SETUP DIAGRAM
N3107/N3221 Regulators
General Test Procedures